Instructions

What approximate value will come in place of the question mark (?) in the given questions? (You are not expected to calculate the exact value.)

Question 75

13.999% of 134.999 + $$\sqrt {7.999 \times 8.0001}$$ = 20 % of ?

Solution

Expression : 13.999% of 134.999 + $$\sqrt {7.999 \times 8.0001}$$ = 20 % of ?

$$\approx 14 \%$$ of $$135 + \sqrt{8 \times 8} = \frac{20}{100} \times x$$

=> $$18.9 + 8 = \frac{x}{5}$$

=> $$x \approx 5 \times (19 + 8) = 5 \times 27$$

=> $$x = 135$$

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